Thick blood films for malaria diagnosis are best used for which purpose?
a. Initial screening
b. Determination of the percent of parasitemia
c. Speciation
d. Identification of stages
ANS: A
Thick blood films concentrate the parasites and are ideal for initial screening. Thin blood films are used for the other three purposes.
Health Professions
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In order to enjoy their upcoming skiing trip, your family has gathered information about risk factors for high-altitude illnesses. Contributing factors that could make altitude illness worse include:
a. a history of angina. b. a diet that is high in carbohydrates. c. the lack of regular exercise. d. COPD.
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What is the best measure of the efficiency of gas exchange in the lung?
a. PaCO2 b. VDS/VT c. End-tidal PCO2 d. PaCO2/PETCO2
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